If your pump is equipped with a piggyback-style plug (where the pump plugs into the back or side of the switch plug) then you can unplug the pump’s plug and put it directly into the power outlet. The pump should immediately run. It will continue to run as long as you leave it plugged in this way. Do not leave it plugged in for more than a few minutes so that the pump does not overheat. To test to make sure the float switch is also working, or if your sump pump has a switch that plugs directly into the body of the pump, you will need to lift the float switch to its ‘on’ position. This will vary depending upon pump model so consult your owners’ manual for that information.